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| | issue date = 08/28/2015 | | | issue date = 08/28/2015 |
| | title = August 11, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 9 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346) | | | title = August 11, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 9 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346) |
| | author name = Mitchell J S | | | author name = Mitchell J |
| | author affiliation = NRC/NRR/DLR | | | author affiliation = NRC/NRR/DLR |
| | addressee name = | | | addressee name = |
| Line 9: |
Line 9: |
| | docket = 05000373, 05000374 | | | docket = 05000373, 05000374 |
| | license number = | | | license number = |
| | contact person = Mitchell J S, NRR/DLR, 415-3019 | | | contact person = Mitchell J, NRR/DLR, 415-3019 |
| | case reference number = DLR-15-0403, TAC MF5346, TAC MF5347 | | | case reference number = DLR-15-0403, TAC MF5346, TAC MF5347 |
| | document type = Conference/Symposium/Workshop Paper, Meeting Summary | | | document type = Conference/Symposium/Workshop Paper, Meeting Summary |
| | page count = 6 | | | page count = 6 |
| | project = TAC:MF5346, TAC:MF5347 | | | project = TAC:MF5346, TAC:MF5347 |
| | stage = Other | | | stage = RAI |
| }} | | }} |
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| =Text= | | =Text= |
| {{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 August 28, 2015 LICENSEE: Exelon Generation Co., LLC FACILITY: LaSalle County Station, Units 1 and 2 | | {{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 August 28, 2015 LICENSEE: Exelon Generation Co., LLC FACILITY: LaSalle County Station, Units 1 and 2 |
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| ==SUBJECT:== | | ==SUBJECT:== |
| SUMMARY OF TELECON HELD ON AUGUST 11, 2015, BETWEEN THE NRC AND EXELON GENERATION CO., LLC, CONCERNING REQUEST FOR ADDITIONAL INFORMATION SET 9 PERTAINING TO THE LASALLE COUNTY STATION LICENSE RENEWAL APPLICATION (TAC NOS. MF5347 AND MF5346)
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| The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Exelon Generation Co., LLC (Exelon or the applicant) held a telephone conference call on August 11, 2015, to discuss and clarify the staff's draft requests for additional information (DRAIs) provided in Enclosure 2 concerning the LaSalle County Station, Units 1 and 2, license renewal application. The telephone conference call was useful in clarifying the intent of the staff's DRAIs. Enclosure 1 provides a listing of the participants and Enclosure 2 contains the DRAIs discussed with the applicant, including a brief description on the status of the items.
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| The applicant had an opportunity to comment on this summary. Sincerely, | | ==SUMMARY== |
| /RA/ Jeffrey S. Mitchell, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374
| | OF TELECON HELD ON AUGUST 11, 2015, BETWEEN THE NRC AND EXELON GENERATION CO., LLC, CONCERNING REQUEST FOR ADDITIONAL INFORMATION SET 9 PERTAINING TO THE LASALLE COUNTY STATION LICENSE RENEWAL APPLICATION (TAC NOS. MF5347 AND MF5346) |
| | The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Exelon Generation Co., LLC (Exelon or the applicant) held a telephone conference call on August 11, 2015, to discuss and clarify the staffs draft requests for additional information (DRAIs) provided in Enclosure 2 concerning the LaSalle County Station, Units 1 and 2, license renewal application. The telephone conference call was useful in clarifying the intent of the staffs DRAIs. provides a listing of the participants and Enclosure 2 contains the DRAIs discussed with the applicant, including a brief description on the status of the items. |
| | The applicant had an opportunity to comment on this summary. |
| | Sincerely, |
| | /RA/ |
| | Jeffrey S. Mitchell, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374 |
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| ==Enclosures:== | | ==Enclosures:== |
| : 1. List of Participants | | : 1. List of Participants |
| : 2. Summary of Telephone Conference Call cc: Listserv August 28, 2015 LICENSEE: Exelon Generation Co., LLC FACILITY: LaSalle County Station, Units 1 and 2 | | : 2. Summary of Telephone Conference Call cc: Listserv |
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| | August 28, 2015 LICENSEE: Exelon Generation Co., LLC FACILITY: LaSalle County Station, Units 1 and 2 |
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| ==SUBJECT:== | | ==SUBJECT:== |
| SUMMARY OF TELECON HELD ON AUGUST 11, 2015, BETWEEN THE NRC AND EXELON GENERATION CO., LLC, CONCERNING REQUEST FOR ADDITIONAL INFORMATION SET 9 PERTAINING TO THE LASALLE COUNTY STATION LICENSE RENEWAL APPLICATION (TAC NOS. MF5347 AND MF5346)
| |
| The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Exelon Generation Co., LLC (Exelon or the applicant) held a telephone conference call on August 11, 2015, to discuss and clarify the staff's draft requests for additional information (DRAIs) provided in Enclosure 2 concerning the LaSalle County Station, Units 1 and 2, license renewal application. The telephone conference call was useful in clarifying the intent of the staff's DRAIs.
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| Enclosure 1 provides a listing of the participants and Enclosure 2 contains the DRAIs discussed with the applicant, including a brief description on the status of the items.
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| | ==SUMMARY== |
| | OF TELECON HELD ON AUGUST 11, 2015, BETWEEN THE NRC AND EXELON GENERATION CO., LLC, CONCERNING REQUEST FOR ADDITIONAL INFORMATION SET 9 PERTAINING TO THE LASALLE COUNTY STATION LICENSE RENEWAL APPLICATION (TAC NOS. MF5347 AND MF5346) |
| | The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Exelon Generation Co., LLC (Exelon or the applicant) held a telephone conference call on August 11, 2015, to discuss and clarify the staffs draft requests for additional information (DRAIs) provided in Enclosure 2 concerning the LaSalle County Station, Units 1 and 2, license renewal application. The telephone conference call was useful in clarifying the intent of the staffs DRAIs. provides a listing of the participants and Enclosure 2 contains the DRAIs discussed with the applicant, including a brief description on the status of the items. |
| The applicant had an opportunity to comment on this summary. | | The applicant had an opportunity to comment on this summary. |
| Sincerely, /RA/ Jeffrey S. Mitchell, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374 | | Sincerely, |
| | /RA/ |
| | Jeffrey S. Mitchell, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374 |
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| ==Enclosures:== | | ==Enclosures:== |
| 1. List of Participants 2. Summary of Telephone Conference Call | | : 1. List of Participants |
| | : 2. Summary of Telephone Conference Call cc: Listserv DISTRIBUTION: |
| | See next page ADAMS Accession Number: ML15224A935 *Concurred via e-mail OFFICE LA:DLR PM:RPB1:DLR PM:RPB1:DLR BC:RPB1:DLR PM:RPB1:DLR NAME YEdmonds JMitchell RPlasse YDiaz-Sanabria JMitchell DATE 8/ 19 /15 8/ 25 /15 8/ 26 /15 8/ 28 /15 8/ 28 /15 OFFICIAL RECORD COPY |
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| | Memo to Exelon Generation Co. from J. Mitchell dated August 28, 2015 |
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| | ==SUBJECT:== |
| | |
| | ==SUMMARY== |
| | OF TELECON HELD ON AUGUST 11, 2015, BETWEEN THE NRC AND EXELON GENERATION CO., LLC, CONCERNING REQUEST FOR ADDITIONAL INFORMATION SET 9 PERTAINING TO THE LASALLE COUNTY STATION LICENSE RENEWAL APPLICATION (TAC NOS. MF5347 AND MF5346) |
| | DISTRIBUTION: |
| | E-MAIL: |
| | PUBLIC RidsNrrDlr Resource RidsNrrDlrRpb1 Resource RidsNrrDlrRpb2 Resource RidsNrrDlrRerb Resource RidsNrrDlrRarb Resource RidsNrrDlrRasb Resource RidsNrrDlrRsrg Resource RidsNrrPMLaSalle Resource |
| | --------------- |
| | J. Mitchell R. Plasse D. Drucker B. Wittick J. Wachutka, OGC D. McIntyre, OPA M. Kunowski, RIII V. Mitlyng, RIII P. Chandrathil, RIII H. Logaras, RIII C. Lipa, RIII S. Sheldon, RIII R. Ruiz, RIII J. Robbins, RIII |
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| | TELEPHONE CONFERENCE CALL LASALLE COUNTY STATION, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS AUGUST 11, 2015 PARTICIPANTS AFFILIATION Jeff Mitchell U.S. Nuclear Regulatory Commission (NRC) |
| | Matt Hardgrove NRC Seung Min NRC John Hufnagel Exelon Generation Co., LLC (Exelon) |
| | Paul Weyhmuller Exelon Mike Guthrie Exelon Jim Jordan Exelon Cortney Scheidt Exelon ENCLOSURE 1 |
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| cc: Listserv DISTRIBUTION: See next page
| | ==SUMMARY== |
| | OF TELEPHONE CONFERENCE CALL LASALLE COUNTY STATION, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION AUGUST 11, 2015 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Exelon Generation Co., LLC (Exelon or the applicant) held a telephone conference call on August 11, 2015, to discuss and clarify the following draft requests for additional information (DRAIs) concerning the LaSalle County Station, Units 1 and 2 license renewal application (LRA). |
| | DRAI 4.2.1-1 |
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| ADAMS Accession Number: ML15224A935 *Concurred via e-mail OFFICE LA:DLR PM:RPB1:DLR PM:RPB1:DLR BC:RPB1:DLR PM:RPB1:DLR NAME YEdmonds JMitchell RPlasse YDiaz-Sanabria JMitchell DATE 8/ 19 /15 8/ 25 /15 8/ 26 /15 8/ 28 /15 8/ 28 /15 OFFICIAL RECORD COPY Memo to Exelon Generation Co. from J. Mitchell dated August 28, 2015 SUBJECT: SUMMARY OF TELECON HELD ON AUGUST 11, 2015, BETWEEN THE NRC AND EXELON GENERATION CO., LLC, CONCERNING REQUEST FOR ADDITIONAL INFORMATION SET 9 PERTAINING TO THE LASALLE COUNTY STATION LICENSE RENEWAL APPLICATION (TAC NOS. MF5347 AND MF5346) DISTRIBUTION: E-MAIL: PUBLIC RidsNrrDlr Resource RidsNrrDlrRpb1 Resource RidsNrrDlrRpb2 Resource RidsNrrDlrRerb Resource RidsNrrDlrRarb Resource RidsNrrDlrRasb Resource RidsNrrDlrRsrg Resource RidsNrrPMLaSalle Resource ---------------
| | ==Background:== |
| J. Mitchell R. Plasse D. Drucker B. Wittick J. Wachutka, OGC D. McIntyre, OPA M. Kunowski, RIII V. Mitlyng, RIII P. Chandrathil, RIII H. Logaras, RIII C. Lipa, RIII S. Sheldon, RIII R. Ruiz, RIII J. Robbins, RIII ENCLOSURE 1 TELEPHONE CONFERENCE CALL LASALLE COUNTY STATION, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS AUGUST 11, 2015
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| PARTICIPANTS AFFILIATION Jeff Mitchell U.S. Nuclear Regulatory Commission (NRC) Matt Hardgrove NRC Seung Min NRC John Hufnagel Exelon Generation Co., LLC (Exelon)
| | License Renewal Application (LRA) Section 4.2.1 describes the applicants time-limited aging analysis (TLAA) on reactor vessel fluence calculations. LRA Section 4.2.1 also indicates that the 54-effective full power year (EFPY) fluence projections for 60 years of operation were calculated using the Nuclear Regulatory Commission (NRC)-approved Radiation Analysis Modeling Application (RAMA) methodology. The LRA further states that the 54-EFPY fluence projections compile the cumulative fluence resulting from each past operating cycle and add the predicted fluence estimate for future operating cycles through the period of extended operation. |
| Paul Weyhmuller Exelon Mike Guthrie Exelon Jim Jordan Exelon Cortney Scheidt Exelon
| | As discussed below, the NRC staff noted that these 54-EFPY fluence projections are independent of the fluence projections used in the current pressure-temperature (P-T) limits. |
| | LRA Section 4.2.1 states that the neutron fluence projections used as inputs to the current 40-year neutron embrittlement analyses for LaSalle County Station (LSCS) Units 1 and 2 were developed in accordance with General Electric (GE) Licensing Topical Report NEDO-32983, General Electric Methodology for Reactor Pressure Vessel Fast Neutron Flux Evaluations (Agencywide Documents Access and Management System (ADAMS) under Accession No. |
| | ML072480121). LRA Section 4.2.1 also indicated that this GE methodology is in compliance with NRC Regulatory Guide 1.190, as approved by the NRC staff in the safety evaluation dated September 14, 2001. |
| | Under LRA Section 4.2.1, the TLAA evaluation states that the 60-year RAMA neutron fluence projections compile the cumulative neutron fluence resulting from each past operating cycle and add the predicted neutron fluence estimated for future operating cycles through the period of extended operation. The RAMA neutron fluence projections are prepared using the Boiling Water Reactor Vessel and Internals Project Technical Report 126 (BWRVIP-126), RAMA Fluence Methodology Software, Version 1.0, methodology. These 60-year neutron fluence projections are independent of the neutron fluence projections used with the current P-T curve submittals. |
| | In comparison, the following reference indicates that the current 40-year (32-EFPY) P-T limits for LSCS, Unit 1 use neutron fluence values that are calculated using the RAMA fluence methodology: |
| | * NRC Safety Evaluation, LaSalle County Station, Unit 1, Issuance of Amendment Revising Pressure and Temperature Limits (TAC No. MF3270), dated November 25, 2014 (ADAMS Accession No. ML14220A517). |
| | ENCLOSURE 2 |
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| ENCLOSURE 2 SUMMARY OF TELEPHONE CONFERENCE CALL LASALLE COUNTY STATION, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION AUGUST 11, 2015 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Exelon Generation Co., LLC (Exelon or the applicant) held a telephone conference call on August 11, 2015, to discuss and clarify the following draft requests for additional information (DRAIs) concerning the LaSalle County Station, Units 1 and 2 license renewal application (LRA). DRAI 4.2.1-1 Background: License Renewal Application (LRA) Section 4.2.1 describes the applicant's time-limited aging analysis (TLAA) on reactor vessel fluence calculations. LRA Section 4.2.1 also indicates that the 54-effective full power year (EFPY) fluence projections for 60 years of operation were calculated using the Nuclear Regulatory Commission (NRC)-approved Radiation Analysis Modeling Application (RAMA) methodology. The LRA further states that the 54-EFPY fluence projections compile the cumulative fluence resulting from each past operating cycle and add the predicted fluence estimate for future operating cycles through the period of extended operation.
| | Section 3.1, Neutron Fluence Calculation, of the above reference states that the safety evaluation shall not be constructed as endorsement, agreement with, or approval of, the position regarding the combined use of neutron fluence methods to determine a total neutron fluence. |
| As discussed below, the NRC staff noted that these 54-EFPY fluence projections are independent of the fluence projections used in the current pressure-temperature (P-T) limits. LRA Section 4.2.1 states that the neutron fluence projections used as inputs to the current 40-year neutron embrittlement analyses for LaSalle County Station (LSCS) Units 1 and 2 were developed in accordance with General Electric (GE) Licensing Topical Report NEDO-32983, "General Electric Methodology for Reactor Pressure Vessel Fast Neutron Flux Evaluations" (Agencywide Documents Access and Management System (ADAMS) under Accession No. ML072480121). LRA Section 4.2.1 also indicated that this GE methodology is in compliance with NRC Regulatory Guide 1.190, as approved by the NRC staff in the safety evaluation dated September 14, 2001. Under LRA Section 4.2.1, the TLAA evaluation states that the 60-year RAMA neutron fluence projections compile the cumulative neutron fluence resulting from each past operating cycle and add the predicted neutron fluence estimated for future operating cycles through the period of extended operation. The RAMA neutron fluence projections are prepared using the Boiling Water Reactor Vessel and Internals Project Technical Report 126 (BWRVIP-126), "RAMA Fluence Methodology Software, Version 1.0," methodology. These 60-year neutron fluence projections are independent of the neutron fluence projections used with the current P-T curve submittals. In comparison, the following reference indicates that the current 40-year (32-EFPY) P-T limits for LSCS, Unit 1 use neutron fluence values that are calculated using the RAMA fluence methodology:
| | Issue: |
| * NRC Safety Evaluation, "LaSalle County Station, Unit 1, Issuance of Amendment Revising Pressure and Temperature Limits (TAC No. MF3270)," dated November 25, 2014 (ADAMS Accession No. ML14220A517).
| | The LRA does not address the RAMA methodology that the NRC staff evaluated in the safety evaluation regarding the current P-T limits for LSCS Unit 1. Therefore, the NRC staff needs additional information as to the specific neutron fluence methodology that is used in the license renewal TLAAs. It is also unclear to the NRC staff how the applicant evaluates potential effects of updated neutron fluence calculations on existing neutron embrittlement analysis. |
| - 2 - Section 3.1, Neutron Fluence Calculation, of the above reference states that the safety evaluation shall not be constructed as endorsement, agreement with, or approval of, the position regarding the combined use of neutron fluence methods to determine a total neutron fluence. Issue: The LRA does not address the RAMA methodology that the NRC staff evaluated in the safety evaluation regarding the current P-T limits for LSCS Unit 1. Therefore, the NRC staff needs additional information as to the specific neutron fluence methodology that is used in the license renewal TLAAs. It is also unclear to the NRC staff how the applicant evaluates potential effects of updated neutron fluence calculations on existing neutron embrittlement analysis. Request: 1. Clarify whether the 54-EFPY neutron fluences described in the LRA are based on the GE methodology, the RAMA methodology, or the combination of the two methodologies. 2. Clarify how the potential effects of updated neutron fluence calculations on neutron embrittlement analyses are evaluated. Teleconference Summary: The staff clarified Request 2, and agreed to revise the wording in the final RAI to request clarification regarding how the applicant will ensure that the actual fluence levels are bounded by the fluence level analyses in the license renewal application, Section 4.2.1.
| | Request: |
| }} | | : 1. Clarify whether the 54-EFPY neutron fluences described in the LRA are based on the GE methodology, the RAMA methodology, or the combination of the two methodologies. |
| | : 2. Clarify how the potential effects of updated neutron fluence calculations on neutron embrittlement analyses are evaluated. |
| | Teleconference Summary: |
| | The staff clarified Request 2, and agreed to revise the wording in the final RAI to request clarification regarding how the applicant will ensure that the actual fluence levels are bounded by the fluence level analyses in the license renewal application, Section 4.2.1.}} |
Letter Sequence RAI |
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TAC:MF5346, Control Room Habitability (Approved, Closed) TAC:MF5347, Control Room Habitability (Approved, Closed) |
Results
Other: ML15104A782, ML15196A045, ML15196A115, ML16202A033, RS-15-193, Responds to NRC Requests for Additional Information, Set 5, Dated July 7, 2015 Related to the License Renewal Application, RS-15-194, Responds to NRC Requests for Additional Information, Set 6, Dated July 7, 2015 Related to the License Renewal Application, RS-15-305, Corrections to the License Renewal Application Dated December 9, 2014, RS-15-306, Submittal of 10 CFR 54.21(b) Annual Amendment to the License Renewal Application, RS-16-033, Update to Commitment 47 Related to the License Renewal Application, RS-16-068, Comments on the Safety Evaluation Report with Open Items, Related to the License Renewal Application, RS-16-128, Second 10 CFR 54.21(b) Annual Amendment to the License Renewal Application
|
MONTHYEARML15104A7822015-05-0808 May 2015
Scoping and Screening Methodology Audit Report Regarding LaSalle County Station, Units 1 and 2
Project stage: Other
ML15111A1372015-05-14014 May 2015
Requests for Additional Information for the Review of the LaSalle County Station, Units 1 and 2 License Renewal Application - Set 1 (TAC Nos. MF5347 and MF5346)
Project stage: RAI
ML15125A1982015-05-29029 May 2015
Requests for Additional Information for the Review of the LaSalle County Station, Units 1 and 2 License Renewal Application - Set 2 (TAC Nos. MF5347 and MF5346)
Project stage: RAI
ML15131A4132015-06-0808 June 2015
Requests for Additional Information for the Review of the LaSalle County Station, Units 1 and 2 License Renewal Application - Set 3 (TAC Nos. MF5347 and MF5346)
Project stage: RAI
ML15140A1922015-06-0808 June 2015
Summary of Telephone Conference Call Held on May 13, 2015, Between the U.S. Nuclear Regulatory Commission and Exelon Generation Co., LLC, Concerning Requests for Additional Information, Set 2 Pertaining to the Lasalle County Station License
Project stage: RAI
ML15146A2622015-06-19019 June 2015
Requests for Additional Information for the Review of the LaSalle County Station, Units 1 and 2 License Renewal Application-Set 4 (TAC Nos. MF5347 and MF5346)
Project stage: RAI
RS-15-165, Response to NRC Requests for Additional Information, Set 2, Dated May 29, 2015 Related to the License Renewal Application2015-06-25025 June 2015
Response to NRC Requests for Additional Information, Set 2, Dated May 29, 2015 Related to the License Renewal Application
Project stage: Response to RAI
RS-15-171, Response to NRC Requests for Additional Information, Set 3, Dated June 8, 2015, Related to the License Renewal Application2015-07-0101 July 2015
Response to NRC Requests for Additional Information, Set 3, Dated June 8, 2015, Related to the License Renewal Application
Project stage: Response to RAI
ML15159A9002015-07-0606 July 2015
Telephone Conference Call Held on May 20, 2015, Between the U.S. Nuclear Regulatory Commission and Exelon Generation Co., LLC, Requests for Additional Information, Set 3 Pertaining to the LaSalle County Station License Renewal Application (
Project stage: RAI
ML15163A0712015-07-0707 July 2015
Requests for Additional Information for the Review of the LaSalle County Station, Units 1 and 2 License Renewal Application - Set 6 (TAC Nos. MF5347 and MF5346)
Project stage: RAI
ML15159A2082015-07-0707 July 2015
Requests for Additional Information for the Review of the LaSalle County Station, Units 1 and 2 License Renewal Application - Set 5 (TAC Nos. MF5347 and MF5346)
Project stage: RAI
RS-15-180, Response to NRC Requests for Additional Information, Set 4, Dated June 19, 2015 Related to the License Renewal Application2015-07-15015 July 2015
Response to NRC Requests for Additional Information, Set 4, Dated June 19, 2015 Related to the License Renewal Application
Project stage: Response to RAI
RS-15-198, Request for Schedule Change Related to Advisory Committee on Reactor Safeguards (ACRS) Subcommittee Review of License Renewal Application (TAC Nos. MF5347 and MF5346)2015-07-16016 July 2015
Request for Schedule Change Related to Advisory Committee on Reactor Safeguards (ACRS) Subcommittee Review of License Renewal Application (TAC Nos. MF5347 and MF5346)
Project stage: Request
ML15196A5292015-07-27027 July 2015
Requests for Additional Information for the Review of the Lasalle County Station, Units 1 and 2 License Renewal Application - Set 7 (Tac Nos. MF5347 and MF5346)
Project stage: RAI
RS-15-194, Responds to NRC Requests for Additional Information, Set 6, Dated July 7, 2015 Related to the License Renewal Application2015-08-0606 August 2015
Responds to NRC Requests for Additional Information, Set 6, Dated July 7, 2015 Related to the License Renewal Application
Project stage: Other
RS-15-193, Responds to NRC Requests for Additional Information, Set 5, Dated July 7, 2015 Related to the License Renewal Application2015-08-0606 August 2015
Responds to NRC Requests for Additional Information, Set 5, Dated July 7, 2015 Related to the License Renewal Application
Project stage: Other
ML15204A6302015-08-18018 August 2015
Requests for Additional Information for the Review of the LaSalle County Station Units 1 & 2 License Renewal Application - Set 9 (TAC Nos. MF5347 and MF5346)
Project stage: RAI
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Response to NRC Requests for Additional Information, Set 7, Dated July 27, 2015; and a Correction to Information Associated with the Set 2 Response to RAI 8.2.1.20-2, Related to the Renewal Application
Project stage: Response to RAI
ML15229A0192015-08-27027 August 2015
Requests for Additional Information for the Review of the LaSalle County Station, Units 1 and 2 License Renewal Application - Set 10 (TAC Nos. MF5347 and MF5346)
Project stage: RAI
ML15217A5412015-08-28028 August 2015
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Project stage: RAI
ML15217A5642015-08-28028 August 2015
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Project stage: RAI
ML15217A5752015-08-28028 August 2015
June 10, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 4 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
Project stage: RAI
ML15219A2772015-08-28028 August 2015
June 23, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 6 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
Project stage: RAI
ML15222A0062015-08-28028 August 2015
August 5, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 9 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
Project stage: RAI
ML15195A3382015-08-28028 August 2015
Requests for Additional Information for the Review of the LaSalle County Station, Units 1 and 2 License Renewal Application-Set 8 (TAC Nos. MF5347 and MF5346)
Project stage: RAI
ML15222A0082015-08-28028 August 2015
July 22, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 8 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
Project stage: RAI
ML15222A0152015-08-28028 August 2015
July 8, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 7 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
Project stage: RAI
ML15224A9352015-08-28028 August 2015
August 11, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 9 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
Project stage: RAI
ML15244B3532015-09-14014 September 2015
RAI for the Review of the LaSalle County Station, Units 1 and 2 License Renewal Application - Set 11 (TAC Nos. MF5347 and MF5346)
Project stage: RAI
RS-15-232, Response to NRC Requests for Additional Information, Set 9, Dated August 18, 2015 Related to the License Renewal Application2015-09-15015 September 2015
Response to NRC Requests for Additional Information, Set 9, Dated August 18, 2015 Related to the License Renewal Application
Project stage: Response to RAI
RS-15-238, Response to NRC Requests for Additional Information, Set 10, Dated August 27, 2015 Related to License Renewal Application2015-09-17017 September 2015
Response to NRC Requests for Additional Information, Set 10, Dated August 27, 2015 Related to License Renewal Application
Project stage: Response to RAI
ML15196A1152015-09-22022 September 2015
Aging Management Programs Audit Report Regarding Lasalle County Station, Units 1 and 2,
Project stage: Other
ML15196A0452015-09-22022 September 2015
Aging Management Programs Audit Report Regarding Lasalle County Station, Units 1 and 2, (TAC Nos. MF5347 and MF5346). Cover Letter
Project stage: Other
RS-15-239, Response to NRC Requests for Additional Information, Set 8, Dated August 28, 2015 Related to the License Renewal Application2015-09-28028 September 2015
Response to NRC Requests for Additional Information, Set 8, Dated August 28, 2015 Related to the License Renewal Application
Project stage: Response to RAI
RS-15-256, Response to NRC Request for Additional Information, Set 11, Dated September 14, 2015 Related to the License Renewal Application2015-10-0808 October 2015
Response to NRC Request for Additional Information, Set 11, Dated September 14, 2015 Related to the License Renewal Application
Project stage: Response to RAI
ML15208A0522015-10-22022 October 2015
Schedule Revision for the Review of the Lasalle County Station License Renewal Application (TAC Nos. MF5347 & MF5346)
Project stage: Approval
ML15271A0212015-10-23023 October 2015
Requests for Additional Information for the Review of the Lasalle County Station, Units 1 and 2 License Renewal Application-Set 12 (TAC Nos. MF5347 and MF5346)
Project stage: RAI
RS-15-281, Response to NRC Requests for Additional Information, Set 12, Dated October 23, 2015 Related to the License Renewal Application2015-10-29029 October 2015
Response to NRC Requests for Additional Information, Set 12, Dated October 23, 2015 Related to the License Renewal Application
Project stage: Response to RAI
ML15300A3662015-11-0303 November 2015
Requests for Additional Information for the Review of the LaSalle County Station, Units 1 and 2 License Renewal Application - Set 13 (TAC Nos. MF5347 and MF5346)
Project stage: RAI
RS-15-305, Corrections to the License Renewal Application Dated December 9, 20142015-12-0202 December 2015
Corrections to the License Renewal Application Dated December 9, 2014
Project stage: Other
RS-15-306, Submittal of 10 CFR 54.21(b) Annual Amendment to the License Renewal Application2015-12-0202 December 2015
Submittal of 10 CFR 54.21(b) Annual Amendment to the License Renewal Application
Project stage: Other
RS-15-292, Response to NRC Requests for Additional Information, Set 13, Dated November 3, 2015 Related to the License Renewal Application2015-12-10010 December 2015
Response to NRC Requests for Additional Information, Set 13, Dated November 3, 2015 Related to the License Renewal Application
Project stage: Response to RAI
ML15272A4002015-12-11011 December 2015
Summary of Teleconference Held on September 24, 2015, Between the NRC and Exelon Generation Co., LLC, Concerning RAI Set 10 Response Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
Project stage: RAI
ML15301A1892015-12-14014 December 2015
Request for Additional Information for the Review of the LaSalle County Station, Units 1 & 2 License Renewal Application - Set 14 (TAC Nos. MF5347 and MF5346)
Project stage: RAI
RS-16-003, Responses to NRC Requests for Additional Information, Set 14, Dated December 14, 2015, and Two Additional Commitment Implementation Schedule Clarifications, Related to the License Renewal Application2016-01-0707 January 2016
Responses to NRC Requests for Additional Information, Set 14, Dated December 14, 2015, and Two Additional Commitment Implementation Schedule Clarifications, Related to the License Renewal Application
Project stage: Response to RAI
ML15357A2812016-01-0707 January 2016
Summary of Teleconference Held on December 22, 2015, Between the NRC and Exelon Generation Co., LLC, Concerning the LaSalle County Station License Renewal Application (Tac Nos. MF5347 and MF5346)
Project stage: Meeting
RS-16-007, Supplemental Information Associated with Implementation of BWRVIP-25, Core Plate Inspection and Flaw Evaluation Guidelines, Related to the License Renewal Application2016-01-14014 January 2016
Supplemental Information Associated with Implementation of BWRVIP-25, Core Plate Inspection and Flaw Evaluation Guidelines, Related to the License Renewal Application
Project stage: Supplement
ML16021A3252016-01-29029 January 2016
Summary of Teleconference Held on January 21, 2016, Between the NRC and Exelon Generation Co., LLC, Concerning RAI 4.2.10-1 Response
Project stage: RAI
RS-16-033, Update to Commitment 47 Related to the License Renewal Application2016-02-0101 February 2016
Update to Commitment 47 Related to the License Renewal Application
Project stage: Other
ML15344A3542016-02-16016 February 2016
Requests for Additional Information for the Review of the Lasalle County, Units 1 and 2 License Renewal Application Set 15 (TAC Nos. MF5347 and MF5346)
Project stage: RAI
2015-07-16
[Table View] |
|
|---|
Category:Conference/Symposium/Workshop Paper
MONTHYEARML15224A9352015-08-28028 August 2015
August 11, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 9 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
ML15222A0152015-08-28028 August 2015
July 8, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 7 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
ML15222A0082015-08-28028 August 2015
July 22, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 8 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
ML15222A0062015-08-28028 August 2015
August 5, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 9 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
ML15219A2772015-08-28028 August 2015
June 23, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 6 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
ML15217A5752015-08-28028 August 2015
June 10, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 4 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
ML15217A5642015-08-28028 August 2015
June 3, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 4 Pertaining to the LaSalle County Station License Renewal Application (Tac Nos. MF5347 and MF5346)
ML15217A5412015-08-28028 August 2015
June 9, 2015, Summary of Telecon Held Between the NRC and Exelon Generation Co., LLC, Concerning Request for Additional Information Set 5 Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
2015-08-28
[Table view]
Category:Meeting Summary
MONTHYEARML24192A2122024-07-10010 July 2024
Summary of the May 22, 2024, Public Outreach to Discuss the NRC 2023 End-Of-Cycle Plant Performance Assessment of Lasalle County Station, Units 1 and 2
ML24128A2512024-05-14014 May 2024
Summary of April 11, 2024, Public Meeting with Constellation Energy Generation, LLC Regarding Proposed Alternative to Implement American Society of Mechanical Engineers Operation and Maintenance Code Case OMN-32
ML24113A2872024-04-25025 April 2024
Summary of Public Meeting with Constellation Energy Generation, LLC Regarding Hooded Masks
ML24032A0862024-02-0202 February 2024
Summary of Meeting with Constellation Energy Generation, LLC, on Planned Requests to Use Code Case N-932
ML23320A2472023-11-17017 November 2023
Constellation - Summary of November 14, 2023, Public Pre-Application Meeting with Constellation Energy Generation, LLC on Adoption of TSTF-591
ML23263B1062023-09-22022 September 2023
R. E. Ginna Nuclear Power Plant - Constellation - Pre-Application Amse 9/18/2023 Meeting Summary
ML23234A2342023-08-29029 August 2023
Summary of August 18, 2023, Meeting with Constellation Energy Generation, LLC, Related to the LAR to Relocate Pressure and Temperature Limit Curves to the Pressure and Temperature Limits Report
ML23173A0072023-06-22022 June 2023
Summary of the Public Outreach to Discuss the NRC 2022 End-of-Cycle Plant Performance Assessment of LaSalle County Station, Units 1 and 2
ML23055A0352023-03-24024 March 2023
Summary of February 23, 2023, with Constellation Energy Generation, LLC on Proposed Changes to Emergency Plans to Revise Emergency Action Levels
ML22318A1712022-11-16016 November 2022
Summary of Meeting with Constellation Energy Generation, LLC, Related to the Planned Amendment to Revise the Design Basis for Certain Suppression Pool Structures and Components
ML22140A2912022-05-23023 May 2022
Summary of Public Outreach to Discuss the NRC 2021 End-Of-Cycle Plant Performance Assessment of Clinton, Unit 1, and Lasalle, Units 1 and 2
ML21333A1532021-11-30030 November 2021
Summary of November 16, 2021, Meeting with Exelon Generation Company, LLC Regarding a Planned Request for an Alternative to Extend the Inservice Inspection Interval
ML21181A0582021-10-15015 October 2021
Summary of Public Closed Meeting with Exelon Generation Company, LLC Regarding Proprietary Information Marking in the LAR Associated with Transition to New Fuel at Lasalle County Station, Units 1 and 2
ML21237A0412021-08-30030 August 2021
Summary of the July 27, 2021, Meeting with Exelon Generation Company, LLC Regarding a Planned Request to Use Case OMN-28,
ML21195A3932021-07-14014 July 2021
June 30, 2021, Summary of Public Outreach to Discuss the NRC 2020 End-Of-Cycle Plant Performance Assessment of Clinton Power Station, Unit 1, and Lasalle County Station, Units 1 & 2
ML21187A2992021-07-0808 July 2021
Summary of May 27, 2021 Public Pre-Submittal Webinar with Exelon Generation Company, LLC Regarding Proposed License Amendment Requests Associated with Transition to New Fuel at LaSalle County Station, Units 1 and 2 and Quad Cities Nuclear P
ML21176A0822021-07-0606 July 2021
June 15, 2021, Summary of Meeting with Exelon Generation Company, LLC Vessel Nozzle Repair Related to a Planned Request for an Alternative Related to Reactor Pressure
ML21139A1852021-06-22022 June 2021
Summary of Meeting with Exelon Generation Company, LLC Regarding Its Requested Alternative to Eliminate Certain Documentation Requirements for the Replacement of Pressure Retaining Bolting
ML21011A2822021-01-21021 January 2021
Summary of January 6, 2021, Presubmittal Meeting Between the NRC and Exelon Generation Company, LLC Regarding Licensing Activities to Support the Planned Early Closures of Byron, Unit Nos. 1 and 2 and Dresden, Units 2 and 3
ML20351A2832020-12-18018 December 2020
Summary of Meeting with Exelon Generation Company, LLC Regarding a Planned Request for an Exemption to Reduce the Frequency of Updates to Its Inservice Testing and Inspection Programs
ML20342A3522020-12-10010 December 2020
Summary of November 13, 2020, Meeting with Exelon Generation Company, LLC Regarding a Planned Request for an Alterantive to Certain Documentation Requirements for the Replacement of Pressure Retaining Bolting (EPID-L-2020-LRM-0102)
ML20323A0332020-12-0101 December 2020
Summary of November 4, 2020, Meeting with Exelon Generation Company, LLC Regarding a Planned Request for an Alternative to Reduce the Frequency of Updates to Its Inservice Testing and Inspection Programs
ML20239A8322020-08-25025 August 2020
Summary of the August 4, 2020 Public Webinar to Discuss the NRC 2019 End-of-Cycle Plant Performance Assessment of LaSalle County Station, Units 1 and 2
ML20016A2282020-01-27027 January 2020
Summary of Teleconference Meeting with Exelon Generation Company, Lasalle County Station, Units 1 and 2 on Pre-Application Teleconference on License Amendment Requests on TSTF-505, 10 CFR 50.69
ML19326A3152019-12-0303 December 2019
Summary of November 18, 2019, Meeting with Exelon Generation Company, LLC Regarding a Planned Request for an Alternative to Supplemental Valve Position Indication Testing Requirements
ML19326C3582019-12-0303 December 2019
Summary of November 20, 2019, Meeting with Exelon Generation Company, LLC Regarding a Planned Request to Revise the Quality Assurance Program
ML19162A0272019-06-21021 June 2019
Summary of June 4, 2019, Meeting with Exelon Generation Company, LLC Regarding a Planned Request to Extend the Test Interval for Safety Relief Valves
ML20108F0902019-04-20020 April 2019
April 15, 2020, Meeting Summary with Exelon Generation Company, LLC Regarding Planned Request to Defer Submittal of Owner'S Activity Report (Braidwood 2,Byron 2,Calvert Cliffs 1, LaSalle 1, Limerick 1, Nine Mile Point 2, Quad 2, R. E. Ginna
ML19036A8832019-02-0707 February 2019
Summary of Meeting with Exelon Generation Company, LLC Regarding a Planned Request to Use ASME Code Case N-879
ML18354B1712019-01-0202 January 2019
Summary of December 19, 2018, Meeting with Exelon Generation Company, LLC Regarding the Use of Boiling Water Reactor Vessel and Internals Project Guidelines
ML18325A1712018-11-28028 November 2018
Summary of Meeting with Exelon Generation Company, LLC Regarding Planned Fleet License Amendment Request to Revise Technical Specifications for High Radiation Areas
ML18297A1722018-10-26026 October 2018
Summary of Meeting with Exelon Generation Company, LLC Regarding Planned License Amendment Request to Adopt TSTF-427
ML18145A2982018-05-25025 May 2018
Summary of 2018 Public Outreach to Discuss the NRC 2017 End-Of-Cycle Plant Performance Assessment of LaSalle County Station, Units 1 and 2
ML18120A1772018-05-0101 May 2018
Summary of Meeting with Exelon Generation Company, LLC Regarding Draft Guidance for Emergency Response Organization Staffing
ML18065A8362018-03-0707 March 2018
Summary of February 27, 2018, Meeting with Exelon Generation Company, LLC Planned Fleet License Amendment Request to Relocate Staff Qualification Requirements from TSs to the Quality Assurance Topical Report
ML18058A5232018-03-0101 March 2018
Summary of February 26, 2018, Meeting with Exelon Generation Company, LLC Regarding Proposed Alternative to the Main Steam Isolation Valve Testing Requirements
ML17355A0572018-01-0202 January 2018
Summary of December 7, 2017, Public Meeting with Exelon Generation Company, LLC, Regarding a Proposed License Amendment Request
ML17347B1022017-12-14014 December 2017
Summary of Meeting with Exelon Generation Company, LLC on Its Planned Fleet License Amendment Request to Revise the Minimum Staffing Requirements for Emergency Response
ML17184A0092017-07-10010 July 2017
Summary of June 29, 2017, Meeting with Exelon Generation Company, LLC, on Proposed Changes to Emergency Plans to Revise Emergency Action Levels (CAC Nos. MF9779-MF9801)
ML17129A3372017-05-0808 May 2017
Summary of Open House Public Meeting to Discuss NRC 2016 End-Of-Cycle Performance Assessment of LaSalle County Station, Units 1 and 2
ML16228A0622016-08-15015 August 2016
Summary of July 26, 2016, Public Meeting on Status of Associated Effects Submittals Related to the Reevaluated Flood Hazards at Exelon Generation Company, LLC Sites as Part of the Response to Near-Term Task Force Recommendation 2.1, Floodin
ML16202A0582016-07-27027 July 2016
Summary of Meeting with LaSalle County Station, Units 1 and 2, on Pre-Application for Amendment Regarding Suppression Pool Swell
ML16183A2832016-07-0808 July 2016
Summary of 06/27/2016 Telephone Conference Call Between NRC and Exelon Generation Co., LLC Concerning Draft Request for Additional Information Pertaining to the LaSalle County Station License Renewal Application (TAC MF5347 & TAC MF5346)
ML16166A1892016-06-13013 June 2016
Summary of June 7, 2016, Open House Public Meeting to Discuss NRC Activities, Nuclear Power Issues, and 2015 End-of-Cycle Performance Assessment of LaSalle County Station, Units 1 and 2
ML16085A3292016-04-0606 April 2016
Summary of March 22, 2016, Meeting with Exelon Generation Company, LLC, on Proposed License Amendment Request to Adopt ANSI 3.1-2014 Operating Training Standards
ML16088A1112016-04-0101 April 2016
March 22, 2016, Summary of Category 3 Public Meeting LaSalle Dseis
ML16040A2182016-02-11011 February 2016
January 21, 2016, Summary of Meeting with Exelon Generation Company, LLC Licensing Managers
ML16021A3252016-01-29029 January 2016
Summary of Teleconference Held on January 21, 2016, Between the NRC and Exelon Generation Co., LLC, Concerning RAI 4.2.10-1 Response
ML15357A2812016-01-0707 January 2016
Summary of Teleconference Held on December 22, 2015, Between the NRC and Exelon Generation Co., LLC, Concerning the LaSalle County Station License Renewal Application (Tac Nos. MF5347 and MF5346)
ML15272A4002015-12-11011 December 2015
Summary of Teleconference Held on September 24, 2015, Between the NRC and Exelon Generation Co., LLC, Concerning RAI Set 10 Response Pertaining to the LaSalle County Station License Renewal Application (TAC Nos. MF5347 and MF5346)
2024-07-10
[Table view] |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 August 28, 2015 LICENSEE: Exelon Generation Co., LLC FACILITY: LaSalle County Station, Units 1 and 2
SUBJECT:
SUMMARY
OF TELECON HELD ON AUGUST 11, 2015, BETWEEN THE NRC AND EXELON GENERATION CO., LLC, CONCERNING REQUEST FOR ADDITIONAL INFORMATION SET 9 PERTAINING TO THE LASALLE COUNTY STATION LICENSE RENEWAL APPLICATION (TAC NOS. MF5347 AND MF5346)
The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Exelon Generation Co., LLC (Exelon or the applicant) held a telephone conference call on August 11, 2015, to discuss and clarify the staffs draft requests for additional information (DRAIs) provided in Enclosure 2 concerning the LaSalle County Station, Units 1 and 2, license renewal application. The telephone conference call was useful in clarifying the intent of the staffs DRAIs. provides a listing of the participants and Enclosure 2 contains the DRAIs discussed with the applicant, including a brief description on the status of the items.
The applicant had an opportunity to comment on this summary.
Sincerely,
/RA/
Jeffrey S. Mitchell, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374
Enclosures:
- 1. List of Participants
- 2. Summary of Telephone Conference Call cc: Listserv
August 28, 2015 LICENSEE: Exelon Generation Co., LLC FACILITY: LaSalle County Station, Units 1 and 2
SUBJECT:
SUMMARY
OF TELECON HELD ON AUGUST 11, 2015, BETWEEN THE NRC AND EXELON GENERATION CO., LLC, CONCERNING REQUEST FOR ADDITIONAL INFORMATION SET 9 PERTAINING TO THE LASALLE COUNTY STATION LICENSE RENEWAL APPLICATION (TAC NOS. MF5347 AND MF5346)
The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Exelon Generation Co., LLC (Exelon or the applicant) held a telephone conference call on August 11, 2015, to discuss and clarify the staffs draft requests for additional information (DRAIs) provided in Enclosure 2 concerning the LaSalle County Station, Units 1 and 2, license renewal application. The telephone conference call was useful in clarifying the intent of the staffs DRAIs. provides a listing of the participants and Enclosure 2 contains the DRAIs discussed with the applicant, including a brief description on the status of the items.
The applicant had an opportunity to comment on this summary.
Sincerely,
/RA/
Jeffrey S. Mitchell, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374
Enclosures:
- 1. List of Participants
- 2. Summary of Telephone Conference Call cc: Listserv DISTRIBUTION:
See next page ADAMS Accession Number: ML15224A935 *Concurred via e-mail OFFICE LA:DLR PM:RPB1:DLR PM:RPB1:DLR BC:RPB1:DLR PM:RPB1:DLR NAME YEdmonds JMitchell RPlasse YDiaz-Sanabria JMitchell DATE 8/ 19 /15 8/ 25 /15 8/ 26 /15 8/ 28 /15 8/ 28 /15 OFFICIAL RECORD COPY
Memo to Exelon Generation Co. from J. Mitchell dated August 28, 2015
SUBJECT:
SUMMARY
OF TELECON HELD ON AUGUST 11, 2015, BETWEEN THE NRC AND EXELON GENERATION CO., LLC, CONCERNING REQUEST FOR ADDITIONAL INFORMATION SET 9 PERTAINING TO THE LASALLE COUNTY STATION LICENSE RENEWAL APPLICATION (TAC NOS. MF5347 AND MF5346)
DISTRIBUTION:
E-MAIL:
PUBLIC RidsNrrDlr Resource RidsNrrDlrRpb1 Resource RidsNrrDlrRpb2 Resource RidsNrrDlrRerb Resource RidsNrrDlrRarb Resource RidsNrrDlrRasb Resource RidsNrrDlrRsrg Resource RidsNrrPMLaSalle Resource
J. Mitchell R. Plasse D. Drucker B. Wittick J. Wachutka, OGC D. McIntyre, OPA M. Kunowski, RIII V. Mitlyng, RIII P. Chandrathil, RIII H. Logaras, RIII C. Lipa, RIII S. Sheldon, RIII R. Ruiz, RIII J. Robbins, RIII
TELEPHONE CONFERENCE CALL LASALLE COUNTY STATION, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS AUGUST 11, 2015 PARTICIPANTS AFFILIATION Jeff Mitchell U.S. Nuclear Regulatory Commission (NRC)
Matt Hardgrove NRC Seung Min NRC John Hufnagel Exelon Generation Co., LLC (Exelon)
Paul Weyhmuller Exelon Mike Guthrie Exelon Jim Jordan Exelon Cortney Scheidt Exelon ENCLOSURE 1
SUMMARY
OF TELEPHONE CONFERENCE CALL LASALLE COUNTY STATION, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION AUGUST 11, 2015 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Exelon Generation Co., LLC (Exelon or the applicant) held a telephone conference call on August 11, 2015, to discuss and clarify the following draft requests for additional information (DRAIs) concerning the LaSalle County Station, Units 1 and 2 license renewal application (LRA).
DRAI 4.2.1-1
Background:
License Renewal Application (LRA) Section 4.2.1 describes the applicants time-limited aging analysis (TLAA) on reactor vessel fluence calculations. LRA Section 4.2.1 also indicates that the 54-effective full power year (EFPY) fluence projections for 60 years of operation were calculated using the Nuclear Regulatory Commission (NRC)-approved Radiation Analysis Modeling Application (RAMA) methodology. The LRA further states that the 54-EFPY fluence projections compile the cumulative fluence resulting from each past operating cycle and add the predicted fluence estimate for future operating cycles through the period of extended operation.
As discussed below, the NRC staff noted that these 54-EFPY fluence projections are independent of the fluence projections used in the current pressure-temperature (P-T) limits.
LRA Section 4.2.1 states that the neutron fluence projections used as inputs to the current 40-year neutron embrittlement analyses for LaSalle County Station (LSCS) Units 1 and 2 were developed in accordance with General Electric (GE) Licensing Topical Report NEDO-32983, General Electric Methodology for Reactor Pressure Vessel Fast Neutron Flux Evaluations (Agencywide Documents Access and Management System (ADAMS) under Accession No.
ML072480121). LRA Section 4.2.1 also indicated that this GE methodology is in compliance with NRC Regulatory Guide 1.190, as approved by the NRC staff in the safety evaluation dated September 14, 2001.
Under LRA Section 4.2.1, the TLAA evaluation states that the 60-year RAMA neutron fluence projections compile the cumulative neutron fluence resulting from each past operating cycle and add the predicted neutron fluence estimated for future operating cycles through the period of extended operation. The RAMA neutron fluence projections are prepared using the Boiling Water Reactor Vessel and Internals Project Technical Report 126 (BWRVIP-126), RAMA Fluence Methodology Software, Version 1.0, methodology. These 60-year neutron fluence projections are independent of the neutron fluence projections used with the current P-T curve submittals.
In comparison, the following reference indicates that the current 40-year (32-EFPY) P-T limits for LSCS, Unit 1 use neutron fluence values that are calculated using the RAMA fluence methodology:
- NRC Safety Evaluation, LaSalle County Station, Unit 1, Issuance of Amendment Revising Pressure and Temperature Limits (TAC No. MF3270), dated November 25, 2014 (ADAMS Accession No. ML14220A517).
ENCLOSURE 2
Section 3.1, Neutron Fluence Calculation, of the above reference states that the safety evaluation shall not be constructed as endorsement, agreement with, or approval of, the position regarding the combined use of neutron fluence methods to determine a total neutron fluence.
Issue:
The LRA does not address the RAMA methodology that the NRC staff evaluated in the safety evaluation regarding the current P-T limits for LSCS Unit 1. Therefore, the NRC staff needs additional information as to the specific neutron fluence methodology that is used in the license renewal TLAAs. It is also unclear to the NRC staff how the applicant evaluates potential effects of updated neutron fluence calculations on existing neutron embrittlement analysis.
Request:
- 1. Clarify whether the 54-EFPY neutron fluences described in the LRA are based on the GE methodology, the RAMA methodology, or the combination of the two methodologies.
- 2. Clarify how the potential effects of updated neutron fluence calculations on neutron embrittlement analyses are evaluated.
Teleconference Summary:
The staff clarified Request 2, and agreed to revise the wording in the final RAI to request clarification regarding how the applicant will ensure that the actual fluence levels are bounded by the fluence level analyses in the license renewal application, Section 4.2.1.
